Cartridge with a mechanism for transmitting a force to a developing roller of the cartridge

A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge comprising:

• a developing roller configured to develop a latent image;
• a developing frame rotatably supporting the developing roller;
• a supporting member movably supporting the developing frame;
• a clutch configured to be switchable between a state in which a driving force for rotating the developing roller is transmitted and a state in which the transmission of the driving force is blocked, the clutch being rotatable by the driving force and including a locked portion;
• a control member, rotatably supported by a supporting portion fixed on the supporting member, for controlling the transmission of the driving force and the blocking of the driving force by the clutch, the control member including a locking portion engageable with the locked portion, the control member being configured such that the locking portion is rotatable about the supporting portion between (a) an unlocked position in which the locking portion is retracted from a rotation locus of the locked portion to permit the clutch to transmit the driving force to the clutch, and (b) a locked position in which the locking portion engages with the locked portion to stop rotation of the locked portion, thus blocking the transmission of the driving force by the clutch;
• and
• an acting portion, provided on the developing frame, for acting on the control member, the acting portion being capable of rotating the locking portion between the unlocked position and the locked position.